Beating-engine.



T. W. CHASE. HEATING ENGINE.

APPLIOATION Hum APR. 26. 1912.

Patented May 6, 1913.

2 SHEETE-SHEET 1.

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Patented May 6, 1913.

2 SHEETS-SHEET 2.

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yw Z9 following pointed out in the claims thereof.

THEODORE W. CHASE, OF BARNET, VERMONT.

BEATING-E'NGINE. p

Application filed April 26 1912. SeriaLNo. 693,338.

To all whom it may concern:

Be it known that I, THEODORE W. CHASE, a citizen of the United States, residing at lassumpsic, Barnet, in the county of Caledonia and State of Vermont, have invented new and useful Improvements in Beater- Engines, of which the following is a specification.

This invention relates to improvements in beater rolls for beater engines such as are used in grinding pulp for paper. In these beater engines as now used a certain amount of pulp to be ground or beaten is placed within a tank and is ground by the beater roll. Between the ends of the beater roll and the adjacent Wall of the tank at one end, and what is known as the midfeather,

constituting a partition extending longitu machine so as to interfere with the operation of the beater roll. To overcome this difficulty I have provided clearers attached to opposite ends of the beater roll, these clearers occupying the portion of the space between the ends of the beater roll, and the adjacent midfeather and tank wall respectively. The clearer is made preferably of a rectangular metal bar which in operation becomes worn on the outer corner thereof and has to be changed in order to prolong the life of the same, all as hereinafter fully described in the specification and particularly pointed out in the claims.

The invention consists in the combination and arrangement of parts set forth in the specification and particularly Referring to the drawings: Figure 1 is a plan view of a well known form of beater,

engine wit my improved clearers attached to opposite ends of the beater roll. .Fig. 2 is a sectional elevation taken on line 2-2 of Fig. 1 broken away to save space. Fig. 3 is a sectional elevation taken on line 33'of Fig. 1 also broken away. Fig. 4 is a detail end elevation of my improved clearer. Fig. 5 is a detail sectional plan taken on line 55 of Fig. 4. Fig. 6 is'a cross section of one of the clearer bars.

Like numerals refer to like parts throughout the several views of the drawings.

In the drawings, 6 is the beater engine Specification of LettersP'atent.

said blades also project into slots 15 Patented M ay 6,1913.

tank in which the material to be beaten is placed.

7 is the beater roll fast to a shaft-8 journaled in bearings 9, 9. 10 is the driving pulley fast to said shaft 8.

The beater roll 7 consists of two end heads 11 and an intermediate disk 12. Around the periphery of the beater roll are arranged a series of blades or bars 13. These blades project at their opposite ends into slots 14 provided in the peripheries of the heads 11;

rovided in the periphery of'the disk 12. 'lhe blades 13 are held in the slots 14 by rings 16 which extend around the peripheries of the heads 11 and project into notches 17 provided in the ends of the blades 13.

Thus the blades 13 are locked within the notches 14 in the peripheries of the heads 11.

18 is the bed of the machine and in this bed is located a series of stationary blades 19 which cooperate with the blades 13 on the beater roll to beat and pulverize the paper pulp stock in a manner well known to those to prevent these spaces from becoming clogged and by such clogging to interfere with the operation of the machine and with the rotation of the beater roll, I fasten to the opposite heads 11 projecting blades 24 which are fastened by rivets 25 to said heads 11. made of cast iron and have converging sides 26 and 27.

The clearer bars 28, made preferably rectangular in shape and of hard steel, are fastened to the projections 24 by suitable bolts 29 and 30. These bolts extend through holes 31 and 32, respectively. in the projections 24 and are substantially parallel to the heads 11. The holes 31 and 32 are made of greater diameter than the bolts 29 and 30, so that said bolts are a loose fit therein. The bolts 29 and 30 project through holes 33 and 34, respectively, in the clearer bars These projections 24 are preferably utilized in the clearing operation. \Vhen the device is in use, the advancing corner nearest to the adjacent partitlon .or wall .is the one which wears first and after a time it rounded off so that it has to be replacedQ B y the arrangement of bolts and holes shown 111 F 1g. 4 all four corners of the clearer can be utilized. For instance, by reference to Fig. (3, the corner marked 1 would be the advancing corner when'the clearer 28' is bolted to the projecting blade 21, as in Fig. 1. After this corner 1 .has become worn, the clearer can be removed from the projection 21 at the right of the roll 7 (Fig. 1) and exchanged for the clearer on the opposite end of the roll, and in that case the corner marked 2 will be the advancing corner adjacent to the wall of the tank 6. After the corner 2 becomes rounded and worn, the clearer can be fastened to the roll by bolts extending through the holes 35 and 36 and the clearer turned end for end, and when attached to the projection 24 by the bolts 29 and 30 extending through the holes 35 and 36 respectively, the corner 3 will first be worn and, by attaching it to the opposite end of the roll, the corner 4 will be exposed to the most wear.

\ The advantages of the device hereinbefore described are as follows: The clearer can be easily attached to the roll and at either end thereof and in. such a manner as to greatly prolong the life of said clearer by reason of the fact that all four corners of the same can be utilized. The clearer being made of hard steel is of long life and can be replaced without any change in the roll and without stopping the machine more than a few minutes. All of the parts ofthe roll, including the heads and the projections thereon, are made permanent, while the clearer bar itself is the only part which has to be replaced. The clearer prevents the rings which hold the knives in position on the heads from becoming detached from the beater roll.

The general operation of the machine hereinbefore specifically described is as follows: The material.to be ground or pulverized is placed in the tank 6 and passed around in the direction of the arrow a (Fig. 1), while the beater roll rotates in the direction of the arrow 1) (Figs. 1 and 3). The material passes between the blades 13 and the stationary blades 19 and is turned and pulverized and then passes upwardly over the elevated portion 37 of the bed 18,-thence around in the direction of the arrow 0 (Fig. 1)' and along the right hand side of the midfeather 21, thence passing around in the direction of the arrow a between the beater 'roll 7 and the stationary blades 19, and this process is continued until the pulp is sufficiently beaten'up. During this process the -clearers 28 rotate and clear out the pulp which lies between the ends of the roll and the .niidfeather 21 and the side wall of the tank .6. Said clearer bars 28, it will be noted, are inclined at an angle to a radial line intersecting the outer end thereof and areinclined backwardly at their outer ends in anopposite direction from that in which the roll is rotated, thus tending to force the material outwardly from the center of the roll. By inclining the faces 26 and 27 of the projections 21 in opposite directions, so that they shall converge toward the periphery of the beater roll, the clearer bar may be used on opposite sides of the projection 24, so that said roll may be reversed in its direction of rotation if desired.

It will'be seen that the clearer 28 projects outwardly on thebeater roll to a sutiicient extent to come in alinement with the rings 16 and thus to lock said rings to the rolls and prevent their coming out of the notches in the ends of the blades 13.

Having thus described my invention, what I claim and desire by Letters Patent to secure is:

1. A beater engine having, in combination, a shaft, a heater roll embodying two heads fast to said shaft, a frame constituting a tank in which said roll is adapted to rotate and a clearer fast to one head of said roll, said clearer consisting of a rectangular bar. of metal and fastening means extending therethrough transversely of said shaft and connecting said clearer to said head.

2. A beater engine having, in combination, a shaft, a beater roll embodying two heads, a frame constituting a tank in which said roll is adapted to rotate and a clearer fast to one head of said roll and inclined at an angle to a radial line intersecting'the Outer end. of said clearer, and fastening means extending through said clearer and transversely of said shaft.

3. A beater engine having, in combination, a shaft, a beater roll embodying'two heads, a frame constituting a tank in which said roll is'adapted'to rotate, a projection on one head of said roll, a metal bar and fastening bolts extending through said projection andtransversely of said shaft.

1. A beater engine having, in combination, a beater roll embodying two heads, a

frame constituting a tank inf which said 5. A beater engine having, in combination, a beater roll embodying two heads, a frame constituting a tank 1n which said roll is-adapted to rotate, a projection on one head of said roll having converging sides and a clearer consisting of a metal bar adapted to be fastened to either of said converging sides.

6. A roll for paper pulp beating engines having, in combination, a pairof heads, a, series of blades with. their ends projecting" into slots in the peripheries of said heads,

rings extending around the peripheries of said heads and into notches provided in the ends of said blades, projections on said heads and clearers fast to said projections by bolts extending through said projections, said bolts substantially parallel to said heads and said clearers projecting outwardly beyond the peripheries of said heads into alinement with said rings whereby said rings are locked to said heads.

7. A beater engine having, in combination, a shaft, a beater roll embodying two heads, a frame constituting a tank in which said roll is adapted to rotate, a projection on one head of said roll, a metal bar constituting a clearer, said clearer inclined at an angle to a radial line intersecting the outer end of said clearer, and means to fasten said clearer to said projection, said fastening means extending through said clearer and said projection transversely of said shaft.

In testimony whereof I have hereunto set myhand in presence of two subscribing witnesses.

THEODORE W. CHASE. Witnesses v C. B. WEBSTER, J. C. GAY. 

